diff options
Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 3ac7c833c78..831b8c259f4 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -4957,10 +4957,10 @@ function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, } /* For an arg passed partly in registers and partly in memory, this is - the number of registers used. For args passed entirely in registers - or entirely in memory, zero. When an arg is described by a PARALLEL, - perhaps using more than one register type, this function returns the - number of bytes of registers used by the PARALLEL. */ + the number of bytes passed in registers. For args passed entirely in + registers or entirely in memory, zero. When an arg is described by a + PARALLEL, perhaps using more than one register type, this function + returns the number of bytes used by the first element of the PARALLEL. */ static int rs6000_arg_partial_bytes (CUMULATIVE_ARGS *cum, enum machine_mode mode, @@ -4985,9 +4985,10 @@ rs6000_arg_partial_bytes (CUMULATIVE_ARGS *cum, enum machine_mode mode, align_words = rs6000_parm_start (mode, type, cum->words); if (USE_FP_FOR_ARG_P (cum, mode, type) - /* If we are passing this arg in gprs as well, then this function - should return the number of gprs (or memory) partially passed, - *not* the number of fprs. */ + /* If we are passing this arg in the fixed parameter save area + (gprs or memory) as well as fprs, then this function should + return the number of bytes passed in the parameter save area + rather than bytes passed in fprs. */ && !(type && (cum->nargs_prototype <= 0 || (DEFAULT_ABI == ABI_AIX |